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Legal Dietary Supplement Enhances Athletic Performance By Six Percent

July 5, 2013: 12:00 AM EST
A U.S. study has determined that a nutrient found in shellfish and beets, and available as a powder or capsule supplement, can enhance athletic performance – legally – by as much as six percent. According to the researchers, who tested 16 college-age cyclists, betaine seems to contribute to creatine synthesis, which in turn improves strength, power and short-term performance. In the study, one week of betaine supplementation increased peak and mean anaerobic power by 5.5 percent compared to baseline measures.
J. Luke Pryor et al., "Effect of betaine supplementation on cycling sprint performance", Journal of the International Society of Sports Nutrition, July 05, 2013, © Pryor et al.
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